Philippines. Department of Interior and Local Government. Local Government Academy. (1993). Manual on management systems. The Academy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. Department of Interior and Local Government. Local Government Academy. Manual on Management Systems. Mandaluyong City: The Academy, 1993.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. Department of Interior and Local Government. Local Government Academy. Manual on Management Systems. The Academy, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.